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This species is accepted, and its native range is California.

[GB]
Morphology General Habit
Perennial. Culms 100-150 cm long. Leaf-sheaths pubescent; with reflexed hairs. Ligule an eciliate membrane; 2 mm long; obtuse. Leaf-blades 15-35 cm long; 10-20 mm wide. Leaf-blade surface pubescent; hairy on both sides.
Morphology Reproductive morphology Inflorescences
Inflorescence a panicle. Panicle open; ovate; 15-20 cm long. Primary panicle branches drooping; 2 -nate; 7-15 cm long. Spikelets solitary. Fertile spikelets pedicelled. Pedicels flexuous.
Morphology Reproductive morphology Inflorescences Spikelets
Spikelets comprising 6-10 fertile florets; with diminished florets at the apex. Spikelets lanceolate; laterally compressed; 20-25 mm long; breaking up at maturity; disarticulating below each fertile floret.
Fertile
Spikelets comprising 6-10 fertile florets; with diminished florets at the apex. Spikelets lanceolate; laterally compressed; 20-25 mm long; breaking up at maturity; disarticulating below each fertile floret.
Morphology Reproductive morphology Inflorescences Bracts Glume
Glumes persistent; shorter than spikelet. Lower glume lanceolate; 10-12 mm long; 1 length of upper glume; membranous; without keels; 3 -veined. Lower glume surface pubescent. Lower glume apex acuminate. Upper glume lanceolate; 10-14 mm long; 0.8-0.9 length of adjacent fertile lemma; membranous; without keels; 3 -veined. Upper glume surface pubescent. Upper glume apex acuminate.
Morphology Reproductive morphology Flowers Florets
Fertile lemma oblong; 12-15 mm long; chartaceous; without keel; 5-7 -veined. Lemma surface pubescent; hairy all along. Lemma apex awned; 1 -awned. Principal lemma awn subapical; 5-7 mm long overall. Apical sterile florets resembling fertile though underdeveloped.
Morphology Reproductive morphology Flowers
Lodicules 2; membranous. Anthers 3. Ovary with a fleshy appendage above style insertion; pubescent on apex.
Morphology Reproductive morphology Fruits
Caryopsis with adherent pericarp; hairy at apex; apex fleshy. Hilum linear.
Distribution
North America: southwest USA.
Reference
Bromeae. Man US Gr 1994.

Native to:

California

Bromus grandis (Shear) Hitchc. appears in other Kew resources:

First published in W.L.Jepson, Fl. Calif. 1: 175 (1912)

Accepted by

  • Clayton, W.D., Harman, K.T. & Williamson, H. (2006). World Grass Species - Synonymy database The Board of Trustees of the Royal Botanic Gardens, Kew.
  • Flora of North America Editorial Committee (2007). Flora of North America North of Mexico 24: 1-908. Oxford University Press, New York, Oxford.
  • Saarela, J.M., Peterson, P.M. & Váldes-Reyna, J. (2014). A taxonomic revision of Bromus (Poaceae: Pooideae: Bromeae) in México and Central America Phytotaxa 185(1): 1-147.

Literature

Kew Backbone Distributions

  • Flora of North America Editorial Committee (2007). Flora of North America North of Mexico 24: 1-908. Oxford University Press, New York, Oxford.

GrassBase - The Online World Grass Flora
http://creativecommons.org/licenses/by-nc-sa/3.0

Kew Backbone Distributions
The International Plant Names Index and World Checklist of Selected Plant Families 2021. Published on the Internet at http://www.ipni.org and http://apps.kew.org/wcsp/
© Copyright 2017 World Checklist of Selected Plant Families. http://creativecommons.org/licenses/by/3.0

Kew Names and Taxonomic Backbone
The International Plant Names Index and World Checklist of Selected Plant Families 2021. Published on the Internet at http://www.ipni.org and http://apps.kew.org/wcsp/
© Copyright 2017 International Plant Names Index and World Checklist of Selected Plant Families. http://creativecommons.org/licenses/by/3.0